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I 28.27:6616
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Mica-mining methods, costs, and recoveries at no. 10 and no. 21 mines of the Spruce Pine Mica Co., Spruce Pine, N.C. |
1 |
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I 28.27:6619
|
Milling methods and costs at the concentrator of the Britannia Mining & Smelting Co., Ltd., Britannia Beach, B.C. |
1 |
|
I 28.27:6620
|
Geophysical abstracts, no. 1-127 |
1 |
|
I 28.27:6621
|
Milling methods and costs at the Hillside Fluorspar mines, Rosiclare, Ill |
1 |
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I 28.27:6622
|
Employee-timekeeping system and mechanical pay-roll methods at Britannia Mining & Smelting Co. (Ltd.), Britannia Beach, B.C. |
1 |
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I 28.27:6623
|
Procedure of the purchasing and supply departments of the Miami Copper Co., Miami, Ariz |
1 |
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I 28.27:6624
|
Magnetic concentration methods and costs of Witherbee, Sherman & Co., Mineville, N.Y. |
1 |
|
I 28.27:6626
|
Method and cost of dredging sand and gravel, Portland Gravel Co., Portland, Oreg |
1 |
|
I 28.27:6627
|
Iron oxide pigments and mortar colors |
1 |
|
I 28.27:6628
|
Geophysical abstracts, no. 1-127 |
1 |
|
I 28.27:6638
|
Geophysical abstracts, no. 1-127 |
1 |
|
I 28.27:6640
|
Shaft sinking at the Morton Salt Co. mine at Grand Saline, Texas |
1 |
|
I 28.27:6643
|
The mineral industry |
1 |
|
I 28.27:6646
|
Geophysical abstracts, no. 1-127 |
1 |
|
I 28.27:6647
|
Silver consumption in the arts and industries of the United States in 1930 and 1931 |
1 |
|
I 28.27:6650
|
Management of labor in successful metal-mine operations |
1 |
|
I 28.27:6652
|
Mining methods and costs at the Hart Spur pit of the Fort Worth Sand & Gravel Co., Inc., Fort Worth, Tex |
1 |
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I 28.27:6658
|
Milling methods and costs at a Flat River (Mo.) mill |
1 |
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I 28.27:6659
|
Methods and costs of dredging auriferous gravels at Lancha Plana, Amador County, Calif |
1 |
|
I 28.27:6660
|
Description of the property and operations at the Lewiston Dredge, Lewiston, Calif |
1 |